Ethnic disparities lower in states with high penetration of health centers.
D003151:Community Health Centers / Q000600:supply & distribution*; D005006:Ethnicity; D006302:Health Services Research; D006305:Health Status Indicators; D006801:Humans; D008507:Medically Underserved Area; D012959:Socioeconomic Factors; D014481:United States / Q000453:epidemiology